/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1a2e;
            --primary-light: #1a2d4a;
            --primary-dark: #080e1a;
            --accent: #f0a030;
            --accent-hover: #e8941a;
            --accent-light: #fce4b8;
            --bg-white: #ffffff;
            --bg-light: #f4f6fa;
            --bg-dark: #0a1220;
            --text: #0f1a2e;
            --text-light: #5a6a7a;
            --text-white: #f0f2f5;
            --border: #dce0e6;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(15,26,46,0.07);
            --shadow-hover: 0 10px 40px rgba(15,26,46,0.13);
            --shadow-accent: 0 6px 30px rgba(240,160,48,0.25);
            --transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
            --font: 'Segoe UI','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --nav-height: 64px;
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body { font-family: var(--font); background: var(--bg-white); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container-fluid { width: 100%; padding: 0 24px; }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--primary); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { position: relative; display: inline-block; padding-bottom: 0.5rem; }
        .section-title h2::after { content: ''; display: block; width: 60px; height: 4px; background: var(--accent); border-radius: 4px; margin: 0.75rem auto 0; }
        .section-title p { max-width: 640px; margin: 1rem auto 0; font-size: 1.1rem; }

        /* ===== Buttons ===== */
        .btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.75rem 2rem; border-radius: 50px; font-weight: 600; font-size: 1rem; border: none; cursor: pointer; transition: var(--transition); text-decoration: none; line-height: 1.4; }
        .btn-primary { background: var(--accent); color: var(--primary-dark); box-shadow: var(--shadow-accent); }
        .btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 10px 40px rgba(240,160,48,0.35); color: var(--primary-dark); }
        .btn-outline { background: transparent; border: 2px solid var(--accent); color: var(--accent); }
        .btn-outline:hover { background: var(--accent); color: var(--primary-dark); transform: translateY(-2px); }
        .btn-white { background: var(--bg-white); color: var(--primary); }
        .btn-white:hover { background: var(--bg-light); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
        .btn-lg { padding: 1rem 2.8rem; font-size: 1.1rem; }
        .btn-sm { padding: 0.5rem 1.2rem; font-size: 0.9rem; }

        /* ===== Badge / Tag ===== */
        .badge { display: inline-block; padding: 0.2rem 0.8rem; border-radius: 50px; font-size: 0.8rem; font-weight: 600; background: var(--accent-light); color: var(--primary); }
        .badge-blue { background: #dbeafe; color: #1e40af; }
        .badge-green { background: #d1fae5; color: #065f46; }
        .tag { display: inline-block; padding: 0.15rem 0.6rem; border-radius: var(--radius-sm); font-size: 0.75rem; font-weight: 500; background: var(--bg-light); color: var(--text-light); margin: 0.15rem; transition: var(--transition); }
        .tag:hover { background: var(--accent-light); color: var(--primary); }

        /* ===== Header / Nav ===== */
        .site-header { background: var(--primary); color: var(--text-white); position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 20px rgba(0,0,0,0.3); }
        .header-top { display: flex; align-items: center; justify-content: space-between; height: var(--nav-height); padding: 0 24px; max-width: var(--max-width); margin: 0 auto; }
        .logo { font-size: 1.4rem; font-weight: 800; color: var(--accent); letter-spacing: 0.5px; display: flex; align-items: center; gap: 0.5rem; }
        .logo i { font-size: 1.6rem; }
        .logo span { color: var(--text-white); font-weight: 300; }
        .logo:hover { color: var(--accent); }
        .header-actions { display: flex; align-items: center; gap: 1rem; }
        .header-actions .btn { padding: 0.45rem 1.4rem; font-size: 0.9rem; }
        .header-actions .search-toggle { background: none; border: none; color: var(--text-white); font-size: 1.2rem; cursor: pointer; padding: 0.4rem; border-radius: 50%; transition: var(--transition); }
        .header-actions .search-toggle:hover { background: rgba(255,255,255,0.1); }
        .nav-bar { background: var(--primary-light); border-top: 1px solid rgba(255,255,255,0.06); }
        .nav-inner { display: flex; align-items: center; gap: 0.25rem; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; overflow-x: auto; scrollbar-width: none; }
        .nav-inner::-webkit-scrollbar { display: none; }
        .nav-inner a { display: flex; align-items: center; gap: 0.4rem; padding: 0.6rem 1.2rem; color: rgba(255,255,255,0.7); font-size: 0.9rem; font-weight: 500; border-radius: var(--radius-sm); transition: var(--transition); white-space: nowrap; text-decoration: none; }
        .nav-inner a i { font-size: 0.85rem; }
        .nav-inner a:hover { background: rgba(255,255,255,0.08); color: var(--accent); }
        .nav-inner a.active { background: rgba(240,160,48,0.15); color: var(--accent); }
        .mobile-menu-btn { display: none; background: none; border: none; color: var(--text-white); font-size: 1.5rem; cursor: pointer; padding: 0.4rem; }
        .mobile-nav { display: none; background: var(--primary-dark); padding: 1rem 24px; border-top: 1px solid rgba(255,255,255,0.06); }
        .mobile-nav a { display: block; padding: 0.7rem 0; color: rgba(255,255,255,0.7); font-size: 1rem; border-bottom: 1px solid rgba(255,255,255,0.04); text-decoration: none; }
        .mobile-nav a:last-child { border-bottom: none; }
        .mobile-nav a.active { color: var(--accent); }

        /* ===== Hero ===== */
        .hero { position: relative; min-height: 520px; display: flex; align-items: center; background: var(--bg-dark); overflow: hidden; }
        .hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; opacity: 0.45; }
        .hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,26,46,0.85) 0%, rgba(15,26,46,0.4) 100%); }
        .hero-content { position: relative; z-index: 2; width: 100%; padding: 4rem 0; }
        .hero-content .container { display: flex; align-items: center; gap: 3rem; }
        .hero-text { flex: 1; }
        .hero-text .badge { margin-bottom: 1rem; }
        .hero-text h1 { font-size: 3.2rem; font-weight: 800; color: var(--text-white); line-height: 1.15; margin-bottom: 1.2rem; }
        .hero-text h1 .highlight { color: var(--accent); }
        .hero-text p { font-size: 1.15rem; color: rgba(255,255,255,0.7); max-width: 560px; margin-bottom: 2rem; line-height: 1.7; }
        .hero-btns { display: flex; flex-wrap: wrap; gap: 1rem; }
        .hero-visual { flex: 0 0 380px; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-hover); background: rgba(255,255,255,0.05); backdrop-filter: blur(8px); }
        .hero-visual img { width: 100%; height: auto; display: block; }

        /* ===== Stats Section ===== */
        .stats-section { background: var(--bg-light); padding: 3rem 0; }
        .stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1.5rem; text-align: center; }
        .stat-item h3 { font-size: 2.4rem; color: var(--accent); margin-bottom: 0.25rem; }
        .stat-item p { font-size: 0.95rem; color: var(--text-light); margin: 0; }

        /* ===== Intro Section ===== */
        .intro-section { padding: 5rem 0; background: var(--bg-white); }
        .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
        .intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
        .intro-image img { width: 100%; height: auto; display: block; transition: var(--transition); }
        .intro-image:hover img { transform: scale(1.02); }
        .intro-text h3 { margin-bottom: 1rem; }
        .intro-text p { margin-bottom: 1.2rem; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
        .intro-feature { display: flex; align-items: center; gap: 0.6rem; padding: 0.6rem 1rem; background: var(--bg-light); border-radius: var(--radius-sm); font-size: 0.95rem; }
        .intro-feature i { color: var(--accent); font-size: 1.1rem; }

        /* ===== Category / Card Section ===== */
        .category-section { padding: 5rem 0; background: var(--bg-light); }
        .card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
        .card { background: var(--bg-white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); display: flex; flex-direction: column; }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .card-img { position: relative; overflow: hidden; height: 200px; }
        .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .card:hover .card-img img { transform: scale(1.05); }
        .card-img .card-tag { position: absolute; top: 12px; left: 12px; }
        .card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
        .card-body h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
        .card-body h3 a { color: var(--primary); text-decoration: none; }
        .card-body h3 a:hover { color: var(--accent); }
        .card-body p { font-size: 0.9rem; color: var(--text-light); flex: 1; margin-bottom: 1rem; }
        .card-footer { display: flex; justify-content: space-between; align-items: center; padding-top: 0.75rem; border-top: 1px solid var(--border); font-size: 0.85rem; color: var(--text-light); }
        .card-footer .meta { display: flex; align-items: center; gap: 0.5rem; }

        /* ===== Content List (CMS) ===== */
        .content-section { padding: 5rem 0; background: var(--bg-white); }
        .content-list { max-width: 800px; margin: 0 auto; }
        .content-item { display: flex; gap: 1.5rem; padding: 1.5rem 0; border-bottom: 1px solid var(--border); transition: var(--transition); }
        .content-item:last-child { border-bottom: none; }
        .content-item:hover { padding-left: 0.5rem; }
        .content-item .item-thumb { flex: 0 0 120px; height: 80px; border-radius: var(--radius-sm); overflow: hidden; }
        .content-item .item-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .content-item .item-info { flex: 1; }
        .content-item .item-info h4 { font-size: 1.05rem; margin-bottom: 0.3rem; }
        .content-item .item-info h4 a { color: var(--primary); text-decoration: none; }
        .content-item .item-info h4 a:hover { color: var(--accent); }
        .content-item .item-info p { font-size: 0.88rem; color: var(--text-light); margin: 0 0 0.4rem; }
        .content-item .item-meta { font-size: 0.8rem; color: var(--text-light); display: flex; gap: 1rem; align-items: center; }
        .content-item .item-meta .cat { background: var(--bg-light); padding: 0.1rem 0.6rem; border-radius: 50px; }

        /* ===== Features / Steps ===== */
        .features-section { padding: 5rem 0; background: var(--bg-light); }
        .features-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
        .feature-card { text-align: center; padding: 2rem 1.5rem; background: var(--bg-white); border-radius: var(--radius); box-shadow: var(--shadow); transition: var(--transition); }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .feature-card .icon { width: 64px; height: 64px; border-radius: 50%; background: var(--accent-light); color: var(--accent); display: flex; align-items: center; justify-content: center; margin: 0 auto 1rem; font-size: 1.6rem; transition: var(--transition); }
        .feature-card:hover .icon { background: var(--accent); color: var(--primary-dark); }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
        .feature-card p { font-size: 0.9rem; margin: 0; }
        .steps-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; counter-reset: step; }
        .step-card { text-align: center; padding: 1.5rem 1rem; background: var(--bg-white); border-radius: var(--radius); box-shadow: var(--shadow); position: relative; }
        .step-card::before { counter-increment: step; content: counter(step); position: absolute; top: -12px; left: 50%; transform: translateX(-50%); width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--primary-dark); font-weight: 800; font-size: 0.9rem; display: flex; align-items: center; justify-content: center; }
        .step-card .icon { font-size: 1.8rem; color: var(--accent); margin: 0.5rem 0 0.75rem; }
        .step-card h4 { font-size: 1rem; margin-bottom: 0.3rem; }
        .step-card p { font-size: 0.85rem; margin: 0; }

        /* ===== FAQ ===== */
        .faq-section { padding: 5rem 0; background: var(--bg-white); }
        .faq-list { max-width: 740px; margin: 0 auto; }
        .faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 0.75rem; overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--accent); box-shadow: 0 2px 12px rgba(240,160,48,0.08); }
        .faq-question { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; cursor: pointer; background: var(--bg-light); font-weight: 600; color: var(--primary); transition: var(--transition); }
        .faq-question i { font-size: 0.85rem; transition: var(--transition); color: var(--accent); }
        .faq-question.active i { transform: rotate(180deg); }
        .faq-answer { padding: 0 1.5rem; max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; }
        .faq-answer.open { max-height: 400px; padding: 1rem 1.5rem 1.5rem; }
        .faq-answer p { margin: 0; font-size: 0.95rem; }

        /* ===== CTA ===== */
        .cta-section { padding: 4rem 0; background: var(--primary); position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.1; }
        .cta-content { position: relative; z-index: 2; text-align: center; max-width: 640px; margin: 0 auto; }
        .cta-content h2 { color: var(--text-white); margin-bottom: 1rem; }
        .cta-content p { color: rgba(255,255,255,0.7); margin-bottom: 2rem; font-size: 1.05rem; }
        .cta-btns { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.6); padding: 3rem 0 1.5rem; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
        .footer-brand .logo { font-size: 1.2rem; margin-bottom: 1rem; display: inline-flex; }
        .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.5); max-width: 300px; }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 1rem; }
        .footer-col a { display: block; padding: 0.3rem 0; font-size: 0.88rem; color: rgba(255,255,255,0.5); text-decoration: none; transition: var(--transition); }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-text h1 { font-size: 2.6rem; }
            .hero-visual { flex: 0 0 300px; }
            .intro-grid { gap: 2rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .mobile-menu-btn { display: block; }
            .header-actions .btn { display: none; }
            .nav-bar { display: none; }
            .mobile-nav.open { display: block; }
            .hero { min-height: 400px; }
            .hero-content .container { flex-direction: column; text-align: center; }
            .hero-text h1 { font-size: 2rem; }
            .hero-text p { max-width: 100%; }
            .hero-btns { justify-content: center; }
            .hero-visual { flex: 0 0 auto; width: 100%; max-width: 380px; margin-top: 1.5rem; }
            .stats-grid { grid-template-columns: repeat(2,1fr); gap: 1rem; }
            .intro-grid { grid-template-columns: 1fr; }
            .intro-features { grid-template-columns: 1fr; }
            .card-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
            .features-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
            .steps-grid { grid-template-columns: repeat(2,1fr); }
            .content-item { flex-direction: column; gap: 0.75rem; }
            .content-item .item-thumb { flex: 0 0 auto; width: 100%; height: 160px; }
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-brand p { max-width: 100%; }
            .footer-bottom { flex-direction: column; text-align: center; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .section-title { margin-bottom: 2rem; }
            .container { padding: 0 16px; }
        }
        @media (max-width: 520px) {
            .hero-text h1 { font-size: 1.6rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .hero-btns .btn { width: 100%; justify-content: center; }
            .cta-btns .btn { width: 100%; justify-content: center; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .empty-state { text-align: center; padding: 3rem 1rem; color: var(--text-light); background: var(--bg-light); border-radius: var(--radius); }
        .empty-state i { font-size: 2.4rem; color: var(--border); margin-bottom: 1rem; }
        .empty-state p { font-size: 1rem; margin: 0; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #457b9d;
            --secondary-dark: #1d3557;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-dark: #1d3557;
            --text-body: #2b2d42;
            --text-muted: #6c757d;
            --text-light: #f1faee;
            --border-color: #e0e1e6;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.12);
            --transition: all 0.25s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-h: 64px;
        }
        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--primary-dark); text-decoration: underline; }
        a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding: 0; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 700; margin-bottom: 0.5rem; }
        h1 { font-size: 2.6rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-body); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; width: 100%; }
        .section-pad { padding: 80px 0; }
        .text-center { text-align: center; }
        .text-muted { color: var(--text-muted); }
        .section-title { margin-bottom: 0.5rem; font-weight: 800; letter-spacing: -0.02em; }
        .section-subtitle { font-size: 1.1rem; color: var(--text-muted); max-width: 640px; margin: 0 auto 2.5rem auto; }
        .badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .badge-secondary { background: var(--secondary); }
        .badge-accent { background: var(--accent); color: #1a1a2e; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230,57,70,0.35);
        }
        .btn-primary:hover, .btn-primary:focus {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(230,57,70,0.45);
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(69,123,157,0.30);
        }
        .btn-secondary:hover, .btn-secondary:focus {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover, .btn-outline:focus {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            text-decoration: none;
        }
        .btn-white {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(0,0,0,0.08);
        }
        .btn-white:hover, .btn-white:focus {
            background: var(--bg-light);
            transform: translateY(-2px);
            color: var(--primary-dark);
            text-decoration: none;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
        .card-body { padding: 1.5rem; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; }
        .card-text { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 1rem; }
        .tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--text-muted);
            padding: 0.2rem 0.7rem;
            border-radius: 16px;
            font-size: 0.75rem;
            font-weight: 500;
            margin-right: 4px;
            margin-bottom: 4px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); text-decoration: none; }
        .tag-primary { background: rgba(230,57,70,0.12); color: var(--primary); border-color: transparent; }
        .tag-secondary { background: rgba(69,123,157,0.12); color: var(--secondary); border-color: transparent; }
        .divider { height: 1px; background: var(--border-color); margin: 0; border: none; }
        .grid-x { display: flex; flex-wrap: wrap; }
        .cell { flex: 1 1 auto; padding: 0 10px; }
        /* ===== 导航 ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            position: sticky; top: 0; z-index: 100;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            height: var(--header-h);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .logo i { color: var(--primary); font-size: 1.5rem; }
        .logo span { color: var(--primary); }
        .logo:hover { text-decoration: none; color: var(--text-dark); }
        .nav-bar {
            display: flex;
            gap: 6px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-bar a {
            padding: 0.4rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-body);
            transition: var(--transition);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-bar a i { font-size: 0.85rem; color: var(--text-muted); }
        .nav-bar a:hover { background: var(--bg-light); color: var(--primary); text-decoration: none; }
        .nav-bar a:hover i { color: var(--primary); }
        .nav-bar a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(230,57,70,0.25);
        }
        .nav-bar a.active i { color: #fff; }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 6px 10px;
        }
        /* ===== Hero / Banner ===== */
        .banner {
            position: relative;
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
            overflow: hidden;
            padding: 60px 20px;
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .banner-content {
            position: relative;
            z-index: 1;
            max-width: 780px;
            color: #fff;
        }
        .banner-content h1 {
            font-size: 2.6rem;
            color: #fff;
            margin-bottom: 0.75rem;
            text-shadow: 0 2px 12px rgba(0,0,0,0.3);
        }
        .banner-content p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            margin-bottom: 1.2rem;
        }
        .banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 0.5rem;
        }
        .banner .breadcrumb a { color: rgba(255,255,255,0.85); }
        .banner .breadcrumb a:hover { color: #fff; text-decoration: underline; }
        .banner .breadcrumb span { color: rgba(255,255,255,0.5); }
        /* ===== 分类导航标签 ===== */
        .category-tabs {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            padding: 14px 0;
            position: sticky;
            top: var(--header-h);
            z-index: 50;
            box-shadow: var(--shadow-sm);
        }
        .category-tabs-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .category-tabs-inner a {
            padding: 0.4rem 1.2rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-body);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .category-tabs-inner a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            text-decoration: none;
        }
        .category-tabs-inner a.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(230,57,70,0.25);
        }
        /* ===== 文章网格 ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .article-card .card-body { padding: 1.25rem; }
        .article-card .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            margin-bottom: 0.5rem;
        }
        .article-card .meta i { margin-right: 4px; }
        .article-card .card-title { font-size: 1.05rem; }
        /* ===== 图文区块 ===== */
        .feature-block {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }
        .feature-block.reverse { flex-direction: row-reverse; }
        .feature-image {
            flex: 1 1 45%;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .feature-image img { width: 100%; display: block; }
        .feature-text {
            flex: 1 1 45%;
        }
        .feature-text h3 { font-size: 1.6rem; margin-bottom: 0.75rem; }
        .feature-text p { color: var(--text-muted); }
        .feature-text ul { margin-top: 1rem; }
        .feature-text ul li {
            padding: 0.4rem 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
        }
        .feature-text ul li i { color: var(--primary); width: 20px; text-align: center; }
        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: #fff;
            padding: 2rem 1rem;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .label { font-size: 0.9rem; color: var(--text-muted); margin-top: 4px; }
        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: #fff;
            padding: 2rem 1.5rem;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            text-align: center;
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .step-card h4 { font-size: 1.1rem; margin-bottom: 0.4rem; }
        .step-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }
        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-dark);
            transition: var(--transition);
        }
        .faq-question:hover { background: var(--bg-light); }
        .faq-question i { transition: transform 0.3s; color: var(--primary); }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.5rem 1.2rem 1.5rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            display: none;
        }
        .faq-answer.open { display: block; }
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-content { position: relative; z-index: 1; }
        .cta-content h2 { color: #fff; font-size: 2rem; margin-bottom: 0.75rem; }
        .cta-content p { color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 1.5rem auto; }
        .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 50px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 30px;
        }
        .footer-brand .logo { color: #fff; margin-bottom: 0.8rem; }
        .footer-brand .logo span { color: var(--primary-light); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-bottom: 0; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 1rem; font-weight: 600; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover { color: var(--primary-light); text-decoration: underline; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--primary-light); }
        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .header-inner { height: auto; padding: 12px 20px; flex-wrap: wrap; }
            .nav-toggle { display: block; }
            .nav-bar {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding: 12px 0 4px;
                border-top: 1px solid var(--border-color);
                margin-top: 10px;
            }
            .nav-bar.open { display: flex; }
            .nav-bar a { width: 100%; padding: 0.6rem 0.8rem; }
            .banner { min-height: 200px; padding: 40px 16px; }
            .banner-content h1 { font-size: 1.8rem; }
            .banner-content p { font-size: 1rem; }
            .section-pad { padding: 50px 0; }
            h2 { font-size: 1.5rem; }
            .article-grid { grid-template-columns: 1fr; gap: 20px; }
            .feature-block { flex-direction: column !important; gap: 24px; }
            .feature-image, .feature-text { flex: 1 1 100%; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .steps { grid-template-columns: 1fr; gap: 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .category-tabs { top: auto; position: static; }
            .category-tabs-inner { justify-content: center; }
        }
        @media (max-width: 520px) {
            .banner-content h1 { font-size: 1.4rem; }
            .stat-item .num { font-size: 1.8rem; }
            .btn { padding: 0.5rem 1.2rem; font-size: 0.9rem; }
            .cta-buttons { flex-direction: column; align-items: center; }
        }
        /* ===== Foundation 补丁 ===== */
        .grid-container { max-width: var(--max-width); }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --secondary-dark: #c88a20;
            --accent: #d94a4a;
            --bg-body: #f7f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-muted: #eef2f7;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #8a9aaa;
            --text-light: #f0f4f8;
            --border-light: #e2e8f0;
            --border-focus: #2a5a8c;
            --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.06);
            --shadow-md: 0 4px 20px rgba(26, 58, 92, 0.10);
            --shadow-lg: 0 12px 40px rgba(26, 58, 92, 0.14);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
            --nav-h: 48px;
        }

        /* ===== Reset & Base ===== */
        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary); }
        a:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul,ol { list-style: none; }
        button,.button { cursor: pointer; font-family: inherit; }
        input,textarea,select { font-family: inherit; font-size: 1rem; }
        h1,h2,h3,h4,h5,h6 { line-height: 1.3; color: var(--text-primary); font-weight: 700; }
        h1 { font-size: 2.4rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.0rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section { padding: 72px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: ''; display: block; width: 60px; height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
            border-radius: 4px; margin: 12px auto 0;
        }
        .section-title p { color: var(--text-muted); max-width: 600px; margin: 12px auto 0; font-size: 1.05rem; }
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            font-size: 0.8rem; font-weight: 600; letter-spacing: 0.3px;
            background: var(--bg-muted); color: var(--text-secondary);
        }
        .badge-primary { background: var(--primary); color: #fff; }
        .badge-secondary { background: var(--secondary); color: #1a2a3a; }
        .badge-accent { background: var(--accent); color: #fff; }
        .divider { border: none; height: 1px; background: var(--border-light); margin: 32px 0; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: var(--radius-md);
            font-size: 1rem; font-weight: 600; border: none;
            transition: all var(--transition); text-decoration: none;
            box-shadow: var(--shadow-sm);
        }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); color: #fff; }
        .btn-secondary { background: var(--secondary); color: #1a2a3a; }
        .btn-secondary:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); color: #1a2a3a; }
        .btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-lg { padding: 16px 44px; font-size: 1.1rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 8px 20px; font-size: 0.9rem; border-radius: var(--radius-sm); }
        .btn:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: sticky; top: 0; z-index: 100;
        }
        .header-top {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--header-h); padding: 0 24px;
            max-width: var(--max-width); margin: 0 auto;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.5rem; font-weight: 800; color: var(--primary);
            text-decoration: none; letter-spacing: -0.5px;
        }
        .logo i { color: var(--secondary); font-size: 1.6rem; }
        .logo span { color: var(--secondary); font-weight: 700; }
        .logo:hover { color: var(--primary); }
        .nav-bar {
            background: var(--bg-dark);
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .nav-inner {
            display: flex; align-items: center; gap: 4px;
            max-width: var(--max-width); margin: 0 auto;
            padding: 0 24px; height: var(--nav-h);
            overflow-x: auto; scrollbar-width: none;
        }
        .nav-inner::-webkit-scrollbar { display: none; }
        .nav-inner a {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 20px; border-radius: var(--radius-sm);
            font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.7);
            text-decoration: none; white-space: nowrap;
            transition: all var(--transition); border: 1px solid transparent;
        }
        .nav-inner a i { font-size: 0.85rem; }
        .nav-inner a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-inner a.active { color: #fff; background: var(--primary-light); border-color: rgba(255,255,255,0.12); }
        .nav-inner a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            color: #fff;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .article-hero .container { position: relative; z-index: 1; }
        .article-hero .breadcrumb {
            display: flex; align-items: center; gap: 8px;
            font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 24px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: var(--secondary); }
        .article-hero .breadcrumb .sep { color: rgba(255,255,255,0.3); }
        .article-hero .meta {
            display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
            margin-bottom: 20px;
        }
        .article-hero .meta .badge { background: var(--secondary); color: #1a2a3a; }
        .article-hero .meta .date { color: rgba(255,255,255,0.7); font-size: 0.9rem; }
        .article-hero .meta .date i { margin-right: 6px; }
        .article-hero h1 {
            font-size: 2.6rem; color: #fff; max-width: 840px;
            margin-bottom: 20px; line-height: 1.25;
        }
        .article-hero p.lead {
            font-size: 1.15rem; color: rgba(255,255,255,0.8);
            max-width: 700px; line-height: 1.7;
        }

        /* ===== Article Content ===== */
        .article-main { padding: 56px 0 72px; }
        .article-body {
            max-width: 800px; margin: 0 auto;
            background: var(--bg-card); border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md); padding: 48px 56px;
        }
        .article-body .content {
            font-size: 1.05rem; line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body .content p { margin-bottom: 1.4rem; }
        .article-body .content h2,.article-body .content h3 { margin-top: 2rem; margin-bottom: 1rem; }
        .article-body .content ul,.article-body .content ol { margin-bottom: 1.4rem; padding-left: 1.5rem; }
        .article-body .content li { margin-bottom: 0.5rem; color: var(--text-secondary); }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.5rem 0; box-shadow: var(--shadow-sm); }
        .article-body .content blockquote {
            border-left: 4px solid var(--secondary);
            background: var(--bg-muted); padding: 16px 24px;
            margin: 1.5rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary); font-style: italic;
        }
        .article-body .content a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 2px; }
        .article-body .content a:hover { color: var(--secondary); }
        .article-body .tags {
            display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; padding-top: 28px;
            border-top: 1px solid var(--border-light);
        }
        .article-body .tags .badge { background: var(--bg-muted); color: var(--text-secondary); cursor: default; }
        .article-body .tags .badge i { margin-right: 4px; font-size: 0.75rem; }
        .article-body .not-found {
            text-align: center; padding: 60px 20px;
        }
        .article-body .not-found i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; }
        .article-body .not-found h2 { margin-bottom: 12px; }
        .article-body .not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-body .not-found .btn { margin-top: 8px; }

        /* ===== Share Section ===== */
        .share-section {
            max-width: 800px; margin: 32px auto 0;
            display: flex; align-items: center; justify-content: space-between;
            flex-wrap: wrap; gap: 16px;
            background: var(--bg-card); border-radius: var(--radius-md);
            padding: 20px 28px; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .share-section span { font-weight: 600; color: var(--text-primary); font-size: 0.95rem; }
        .share-section .share-btns { display: flex; gap: 10px; }
        .share-section .share-btns a {
            display: flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%;
            background: var(--bg-muted); color: var(--text-secondary);
            font-size: 1.1rem; transition: all var(--transition);
        }
        .share-section .share-btns a:hover { background: var(--primary); color: #fff; transform: scale(1.08); }

        /* ===== Related Posts ===== */
        .related-section { background: var(--bg-muted); padding: 72px 0; }
        .related-grid {
            display: grid; grid-template-columns: repeat(3,1fr); gap: 28px;
        }
        .related-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            overflow: hidden; box-shadow: var(--shadow-sm);
            transition: all var(--transition); border: 1px solid var(--border-light);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .related-card .card-img {
            height: 200px; overflow: hidden; position: relative;
        }
        .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .related-card:hover .card-img img { transform: scale(1.06); }
        .related-card .card-img .badge {
            position: absolute; top: 14px; left: 14px;
            background: var(--primary); color: #fff; font-size: 0.75rem;
        }
        .related-card .card-body { padding: 20px 24px 24px; }
        .related-card .card-body .meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; display: flex; gap: 12px; }
        .related-card .card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .related-card .card-body h3 a { color: var(--text-primary); }
        .related-card .card-body h3 a:hover { color: var(--primary-light); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff; text-align: center; padding: 72px 0;
            position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08; z-index: 0;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 32px; font-size: 1.1rem; }
        .cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .cta-section .btn-secondary { background: var(--secondary); color: #1a2a3a; }
        .cta-section .btn-secondary:hover { background: var(--secondary-light); }
        .cta-section .btn-outline-light { background: transparent; border: 2px solid rgba(255,255,255,0.6); color: #fff; }
        .cta-section .btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; }

        /* ===== FAQ Section ===== */
        .faq-section { background: var(--bg-card); padding: 72px 0; }
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            border: 1px solid var(--border-light); border-radius: var(--radius-md);
            margin-bottom: 12px; overflow: hidden; transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .faq-item summary {
            padding: 18px 24px; cursor: pointer; font-weight: 600;
            font-size: 1.05rem; color: var(--text-primary);
            display: flex; align-items: center; gap: 12px;
            list-style: none; transition: background var(--transition);
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary i { color: var(--secondary); font-size: 1.1rem; transition: transform var(--transition); }
        .faq-item[open] summary { background: var(--bg-muted); }
        .faq-item[open] summary i { transform: rotate(90deg); }
        .faq-item .answer { padding: 0 24px 20px 24px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--secondary); }
        .footer-brand p { font-size: 0.92rem; color: rgba(255,255,255,0.55); max-width: 320px; line-height: 1.7; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
        .footer-col a { display: block; color: rgba(255,255,255,0.55); font-size: 0.9rem; padding: 5px 0; transition: all var(--transition); }
        .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px; padding: 24px 0;
            font-size: 0.85rem; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2,1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.6rem; }
            .section { padding: 48px 0; }
            .article-hero { padding: 48px 0 40px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-body { padding: 28px 20px; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .share-section { flex-direction: column; align-items: flex-start; }
            .header-top { height: 60px; }
            .logo { font-size: 1.2rem; }
            .nav-bar { overflow-x: auto; }
            .nav-inner { gap: 2px; padding: 0 12px; height: 44px; }
            .nav-inner a { padding: 6px 14px; font-size: 0.82rem; }
            .cta-section h2 { font-size: 1.6rem; }
            .article-hero .meta { gap: 10px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero h1 { font-size: 1.5rem; }
            .article-body { padding: 20px 16px; }
            .btn { padding: 10px 24px; font-size: 0.9rem; }
            .btn-lg { padding: 14px 32px; font-size: 1rem; }
            .nav-inner a { padding: 6px 10px; font-size: 0.75rem; }
            .nav-inner a i { display: none; }
            .related-card .card-img { height: 160px; }
            .cta-section .btn-group { flex-direction: column; align-items: center; }
        }

        /* Foundation overrides */
        .grid-container { max-width: var(--max-width); padding-left: 24px; padding-right: 24px; }
        .cell { margin-bottom: 0; }
        @media print {
            .site-header,.nav-bar,.share-section,.cta-section,.faq-section,.site-footer { display: none; }
        }